- High quality: This reminder clock with vibration alarm features a stylish and soft silicone strap that is lightweight, durable, and hypoallergenic. The case is made of ABS + PC material, lightweight and comfortable to wear. The clear display provides a comfortable viewing experience. This is a thoughtful gift for loved ones, friends, or yourself. - Quiet alarm with strong vibration: Supports up to 6 individual vibration alarms, no daily on/off required. The silent, strong vibration does not disturb others, making it ideal for discreet reminders such as bathroom breaks, homework, medication, hydration, waking up, exercise, daily planning, or routine tracking. - Multifunctional: Displays time, date, and day of the week. Includes battery indicator, 6 alarm groups, 12/24-hour format, countdown timer, stopwatch, and temperature measurement. These practical features support all-day reminders, including silent alerts for meetings or medication. - Rechargeable and waterproof: Designed to be sweat-resistant and splash-proof (IPX5 rating), suitable for everyday use, including handwashing or rain. The built-in rechargeable battery lasts up to 30 days on a full charge, eliminating the need for frequent battery replacements. Charges quickly and conveniently via USB port, compatible with power banks and standard USB chargers. - Easy to use: Simple setup with no Bluetooth or app connection required. All settings are programmed directly on the device. Power-off memory function retains all alarm settings even when the device is turned off. Compact and portable design fits easily in a pocket or bag. Material: Silicone + ABS Battery capacity: 75mAh 3.7V Operating environment: -10C to 50C Waterproof rating: IPX5 Charging voltage: DC 5V (built-in USB allows direct charging from power bank) Functions: 1. Body temperature measurement: Automatically monitors body temperature throughout the day. If temperature reaches or exceeds 37.3C, the device vibrates to alert the user. 2. Time and date display with setting function 3. Vibration alarm clock with support for up to 6 alarm groups 4. Countdown timer and stopwatch 5. Fully charged battery provides up to 30 days of working time